Air filter freshener



FIG. 1 is a perspective view of a single-stage embodiment of an air filter freshener;

FIG. 2 is an enlarged front view of the single-stage air filter freshener, wherein an enlarged rear view is a mirror image of the enlarged front view;

FIG. 3 is a left side view of the single-stage air filter freshener, wherein a right side view is a mirror image of the left side view;

FIG. 4 is a top view of the single-stage air filter freshener;

FIG. 5 is a bottom view of the single-stage air filter freshener;

FIG. 6 is a perspective view of a multi-stage embodiment of an air filter freshener;

FIG. 7 is an enlarged front view of the multi-stage air filter freshener, wherein an enlarged rear view is a mirror image of the enlarged front view;

FIG. 8 is a left side view of the multi-stage air filter freshener, wherein a right side view is a mirror image of the left side view;

FIG. 9 is a top view of the multi-stage air filter freshener; and,

FIG. 10 is a bottom view of the multi-stage air filter freshener. 

CLAIM The ornamental design for an air filter freshener, as shown and described. 